H323 Local Zone Gateway-to-Gatekeeper Configuration.

Posted: Sunday, July 14, 2013 by Mahmoud Ramadan Ali in Labels:
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-The scenario presented here illustrates the steps to successfully configure Cisco gateways to register with a gatekeeper using the H323 protocol as members of local zone.

-Our goal in this lab is to configure the two gateways " GW1 " and " GW2 " to register with the gatekeeper " GK " as members of " GW1-ZONE " and " GW2-ZONE " local zones to allow calls between the two gateways using the H323 protocol.

Download tools used in this post :
Download : GNS3
Download : GW/GK IOS
Download : GNS3 GW/GK Topology
Download : Local Zone Gateway-to-Gatekeeper Configuration Video.COMING!

Local Zone Gateway-to-Gatekeeper Configuration Steps:
  • Configure " GK "  gatekeeper.
  • Configure " GW1 " gateway.
  • Configure " GW2 " gateway.
  • Verify the gateways registration.

1.Configure " GK " Gatekeeper.

-Enable the gatekeeper process in the gatekeeper configuration mode using the " no shutdown " command.If no local zones are configured, a no shutdown command places the gatekeeper in an inactive mode, waiting for a local zone definition.

-Configure the local zones that will be controlled by the gatekeeper.The zone name should be in form of FQDN the name of the zone followed by the domain name.



-Configure the zone prefix that represents / summarizes  the zone dial plane.




2.Configure " GW1 " Gateway.

" Configure the interface commands for H.323 registration at the gatekeeper in the interface configuration mode next start the gateway process and configure the dial peers pointing to the RAS Server/Gatekeeper."

-Designate F0/0  interface as being the H.323 gateway interface.This is the interface that will be used by GW1 to discover and register with the Gatekeeper.



-Specify an H.323 name (ID) for the gateway associated with this interface.The gateway uses this ID when it communicates with the gatekeeper. Usually, the H.323 ID is the name given to the gateway.

-Specify the name (ID) associated with this gateway and how the gateway finds the Gatekeeper.The ID configured here must exactly match the Zone name in the gatekeeper configuration. The gateway determines the location of the gatekeeper in one of two ways: by a defined IP address / unicast or through multicast.



 -Enable the gateway process on the router by using the gateway command in the global configuration mode.

-Now,you should receive a message telling you that GW1 Gateway registered with the gatekeeper as a member of GW1-ZONE local zone.

-Configure a VOIP  dial peer pointing to the gatekeeper.The destination pattern will be .T which is any dialed number and the target that the gateway should send the dialed number to will be the RAS Server/Gatekeeper.

 
-The " show gateway " command is used in order to verify the registration status to a gatekeeper.

 
 3.Configure " GW2 " Gateway.

"GW2 Configuration will be a mirror configuration of GW1 with the exception of the GW ID and the H323-ID."

-Designate F0/0  interface as being the H.323 gateway interface.This is the interface that will be used by GW2 to discover and register with the Gatekeeper.

 
-Specify an H.323 name (ID) for the gateway associated with this interface. The gateway uses this ID when it communicates with the gatekeeper. Usually, the H.323 ID is the name given to the gateway.

-Specify the name (ID) associated with this gateway and how the gateway finds the Gatekeeper.The ID configured here must exactly match the Zone name in the gatekeeper configuration. The gateway determines the location of the gatekeeper in one of two ways: by a defined IP address / unicast, through multicast.



-Enable the gateway process on the router by using the gateway command in the global configuration mode.

-Now,you should receive a message telling you that GW2 Gateway registered with the gatekeeper as a member of GW2-ZONE local zone.

-Configure a VOIP  dial peer pointing to the gatekeeper.The destination pattern will be .T which is any dialed number and the target that the gateway should send the dialed number to will be the RAS Server/Gatekeeper.





4.Verify the GWs Registration.

-Use the " Show gatekeeper endpoints " command to verify the endpoints registration status to the gatekeeper.

-To display the status of zones related to a gatekeeper, use the " Show gatekeeper zone status " command.
-To display the total number of active calls processed by the gatekeeper,use the " Show gatekeeper calls " command.